Hi, I have a web app that does google authentication to let users in. How can I replace it with a captcha?

To replace Google authentication with a C AP T CH A , you can use a third - party C AP T CH A service such as re CAP T CH A . Here are the general steps you can follow : \n \n 1 . Sign up for a re CAP T CH A API key from the Google Cloud Console : <</a> https :// console . cloud . google . com / apis / cred entials \n 2 . Install the re CAP T CH A Python library : ` p ip install google - rec apt cha ` \n 3 . In your web app , add the re CAP T CH A JavaScript and CSS files to your HTML page : \n `` ` html \n <</a> script src =" https :// www . google . com / rec apt cha / api . js " async de fer script \n <</a> link rel =" stylesheet " href =" https :// www . google . com / rec apt cha / api . css "> \n `` ` \n 4 . Add the re CAP T CH A widget to your HTML page : \n `` ` html \n <</a> div class =" g - rec apt cha " data - site key =" Y O UR _ S ITE _ KEY "> div \n `` ` \n Replace ` Y O UR _ S ITE _ KEY ` with the site key you obtained from the re CAP T CH A API key . \n \n 5 . In your web app ' s backend , use the re CAP T CH A Python library to verify the user ' s C AP T CH A response : \n `` ` python \n from google . rec apt cha . api import Rec apt cha Response \n \n response = Rec apt cha Response ( request . POST [' g - rec apt cha - response ']) \n if response . is _ valid (): \n # User is aut hent icated \n else : \n # User is not aut hent icated \n `` ` \n 6 . If the user is aut hent icated , you can proceed with the Google authentication process . If the user is not aut hent icated , you can display an error message and prompt the user to try again . \n \n Note that re CAP T CH A is a paid service , and you will need to pay for each request you make to the re CAP T CH A API . You can find more information about re CAP T CH A pricing at <</a> https :// www . google . com / rec apt cha / pr icing </s>